What's this test for?

This test is ideal if you're experiencing confusing thyroid test results that don't match how you feel or what your other labs show. It checks for T3 thyroid hormone autoantibodies, which are proteins your immune system makes that can throw off standard T3 blood tests and make them read too high or too low. It's especially helpful if you have an autoimmune thyroid condition or if a previous T3 result seemed out of place.

What's included in this test?

This test looks specifically at T3 thyroid hormone autoantibodies in your blood. These antibodies matter because they can interfere with regular T3 testing equipment, making your true thyroid hormone level look artificially high or low, which can lead to confusion about your actual thyroid health.

What happens after I get my results?

Your results will show up in your account with a clear explanation of what a normal range looks like and where your value falls. If antibodies are detected, a practical next step is retesting with a different method or comparing results against other thyroid markers to get a fuller picture. If your value is extremely high or paired with severe symptoms, it's a good idea to seek medical care right away. You can download the full lab report from your account anytime and use the trends feature to track changes if you retest later.

How should I naturally support thyroid health?

While antibodies themselves aren't something you fix with diet, supporting overall thyroid and immune health can help. Eating a balanced diet with adequate iodine, selenium, and zinc (found in seafood, nuts, and eggs) supports normal thyroid function. Managing stress, getting consistent sleep, and avoiding smoking can also help keep your immune system balanced. Regular movement and limiting processed foods are simple habits that support your body's overall hormone balance.

When will I get my results?

Results are typically ready within about 7 days of your sample being collected at the lab. You'll get a notification once your report is available in your account, so there's no need to call or follow up. If your results are delayed for any reason, you'll see a status update in your account.

Who should consider this test?

This test is a good fit for anyone whose T3 thyroid results don't line up with their symptoms or other thyroid tests, like TSH. People with known autoimmune thyroid conditions, such as Hashimoto's or Graves' disease, are also more likely to have these antibodies. If you've had unexplained or inconsistent thyroid readings in the past, this test can help clarify what's going on.

What symptoms indicate I may need this test?

You might consider this test if you have thyroid symptoms like fatigue, weight changes, or mood swings, but your T3 blood test results don't match how you feel. It's also worth considering if you've been told your thyroid results look unusual or contradictory compared to other thyroid markers. A family or personal history of autoimmune thyroid disease is another reason to consider testing.

What is a T3 thyroid antibody and why does it matter?

A T3 thyroid antibody is a protein made by your immune system that mistakenly targets the T3 hormone your thyroid produces. It matters because these antibodies can trick lab equipment into giving an inaccurate T3 reading, which can lead to unnecessary worry or missed issues. Knowing whether these antibodies are present helps make sense of any strange or inconsistent thyroid results you've had.

What does a positive antibody result mean?

A positive result means these interfering antibodies are present in your blood, which could explain why a past T3 test looked unusually high or low. It doesn't necessarily mean something is wrong with your thyroid itself. It simply flags that your T3 numbers may not be fully accurate and might need to be double-checked with another testing method.

How often should I retest?

If antibodies are found, retesting isn't usually needed on a set schedule unless your symptoms change or you're monitoring an existing autoimmune thyroid condition. A reasonable approach is to retest if you start new thyroid-related symptoms or if your other thyroid labs shift significantly. Tracking results over time in your account can help you and anyone reviewing your history spot patterns.

Getting your blood test with us is easy, private & backed by the power of science.Long story short: In the test options, use the filters or search box to narrow your choices and find the test you want. If you need a hand navigating through options, text our super friendly support team at 754-799-7833, and we'll provide tailored suggestions to help you find the ideal test. Once your order is placed, we’ll create your doctor’s lab order remotely, without any need for you to make a trip to a doctor in person or to talk to the doctor. Expect to receive your doctor’s lab order right in your inbox. It will also be in your patient portal if you need to find it later. We’ll also include instructions regarding fasting and other requirements for your test. Your patient portal will be auto-created hassle-free during checkout. If this is your first time ordering, you'll be prompted to create a password for instant login access to your patient portal. It's a quick way to conveniently access your orders and results whenever you want. When you’re ready, visit one of our 4,000 locations. Just bring your ID – no printing or faxing of your lab order is needed, as your order and details will already be in the lab system. Note that most lab locations don’t accept walk-ins, so it’s best to book an appointment in advance. Don’t worry – we’ll provide detailed instructions along the way. You’ll get your results via email & SMS and dive into understanding your body better. Yup, that easy! If you have any questions, please text us at 754-799-7833 or email support@privatemdlabs.com and we'll gladly help you.

How do I know which test to get?

In the test options, find the test you want. If you’re not sure which test to get, we can lend a hand in finding the right option. Just text or call us at 754-799-7833, email us at support@privatemdlabs.com, and we'll gladly help you. We've got your back and reply quickly.

When will my lab results be available?

Most test results will be available within 1–3 business days. Once they're ready, we'll send an email and text message to let you know. After your blood draw, just hang tight and don't worry – we'll keep you updated and in the loop! If you have any further questions, please text us at 754-799-7833 or email support@privatemdlabs.com, and we'll gladly help you.

Is it possible to make changes to my lab order if I made a mistake with the name, date of birth, or any other details?

Absolutely! We totally understand that errors can happen. No worries, we're here to help you. Just reach out to us via text at 754-799-7833 or shoot us an email at support@privatemdlabs.com. Remember to include your order number and let us know the correct information you’d like to update. Our awesome team will jump right in and make sure everything is sorted out and accurate for you. There are no changes necessary if your address is wrong on the requisition though. We don’t mail anything out. Our lab requires an address to be listed to generate an order.

Do you accept health insurance?

Only HSA & FSA is accepted. Our services are strictly self-pay and cannot be submitted to your health insurance provider except for Health Savings Accounts or Flexible Savings Accounts. This policy applies to all insurance companies, including federal health insurance programs like Medicare. If you have any questions, please text us at 754-799-7833 or email support@privatemdlabs.com.

Can I cancel my order?

Yes. We get it – sometimes your needs change. As long as your samples haven’t been collected yet, we’re happy to help you cancel your order. If you have any further questions, please text us at 754-799-7833 or email support@privatemdlabs.com. You can read more about our cancellation policy here.

How can I find a lab location near me?

During the ordering process, you’ll be able to select a specific lab near you, with no strings attached! You can switch it up later easily and visit any of our authorized locations as long as it’s the same lab company you selected your test for (Quest Diagnostics or Labcorp). Before you proceed with your order, feel free to browse through all our lab locations here. This will give you the peace of mind of knowing that there's a lab nearby your home, office or your favorite gym. If you have any questions, please text us at 754-799-7833 or email support@privatemdlabs.com and we'll gladly help you.

T3 Thyroid Antibody Test - Clarify Confusing Results

Getting your blood test with us is easy, private & backed by the power of science.

Long story short:

In the test options, use the filters or search box to narrow your choices and find the test you want.
If you need a hand navigating through options, text our super friendly support team at 754-799-7833, and we'll provide tailored suggestions to help you find the ideal test.
Once your order is placed, we’ll create your doctor’s lab order remotely, without any need for you to make a trip to a doctor in person or to talk to the doctor. Expect to receive your doctor’s lab order right in your inbox. It will also be in your patient portal if you need to find it later. We’ll also include instructions regarding fasting and other requirements for your test. Your patient portal will be auto-created hassle-free during checkout.
If this is your first time ordering, you'll be prompted to create a password for instant login access to your patient portal. It's a quick way to conveniently access your orders and results whenever you want.
When you’re ready, visit one of our 4,000 locations. Just bring your ID – no printing or faxing of your lab order is needed, as your order and details will already be in the lab system.
Note that most lab locations don’t accept walk-ins, so it’s best to book an appointment in advance. Don’t worry – we’ll provide detailed instructions along the way.
You’ll get your results via email & SMS and dive into understanding your body better. Yup, that easy!

754-799-7833

[email protected]

T3 Thyroid Antibody Blood Test

T3 (Triiodothyronine) Antibody

Prescription & all lab fees included

Doctor's guidance included

Fast & convenient

Prescription & all lab fees included

Doctor's guidance included

Fast & convenient

What's this test for?

What's included in this test?

What happens after I get my results?

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T3 Thyroid Antibody Blood Test

Prescription & all lab fees included

Doctor's guidance included

Fast & convenient

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